organic compounds
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The title compound, C21H17N3O5·H2O, exists in the keto form with an E conformation with respect to the azomethine double bond. The twist angles between the aromatic rings are in the range 4.67 (10)–17.54 (10)°. A water molecule of solvation is present in the lattice. A conventional intramolecular O—HN hydrogen bond increases the rigidity of the molecule. Intermolecular O—HO, N—HO and C—HO hydrogen-bonding interactions establish a supramolecular linkage among the molecules in the crystal structure. There are also C—Hπ interactions present.